Automatic spool change device for power looms



Nov. 17, 1931. G. BERTULETTI 1,832,760

AUTOMATIC SPOOL CHANGE DEVICE FOR POWER LOOMS Filed Feb. 15. 1927 4 Sheets-Sheet l Nov. 17, 1931.

-G BERTULETTI AUTOMATIC SPOOL CHANGE DEVICE FOR POWER LOOMS Filed Feb. 15. 1927 4 Sheets-Sheet 2 Nov. 17, 1931. G. BERTULETTI AUTOMATIC SPOOL CHANGE DEVICE FOR POWER LOOMS Filed Feb. 15. 1927 4 SheetsSheet 3 Nov. 17, 1931.

G. BERTULETTI AUTOMATIC SPOOL CHANGE DEVICE FOR POWER LOOMS Filed Feb. '15. 1927 4 Sheets- Sheet 4 Patented Nov. 17, 1931 evrno BERTTJ'LETTI, or MILAN, ITALY AUTOMATIC SPOOL CHANGE Application filed February 15, 1927, Serial This invention relates to automatic spool change devices for power looms. More particularly it relates to a device of this character in which the hammer or spool pusher is attached to the rear of the lathe or lathecarrying parts, and inwhich a. single member, controlled by the feeler or Weft fork, actuates mechanism adapted to position a fresh spool, to operate the hammer or spool pusher, l and to bring into operative position a control member or safety device capable of preventing operation of the hammer or spool'pusher when the shuttle is not in the proper position to receive a fresh spool.

The nature of the invention will be more clearly understood by reference to the accompanying drawings, in which are shown two practical, specific embodiments of the principles of the invention, though it is to be understood that the description of these embodiments is purely illustrative and is not restrictive.

In the drawings: Fig. 1 is a side elevation showing the device in rest position,

Fig. 2 is a front elevation showing the parts mounted on the breast beam of a loom,

Fig. 3 is a side elevation showing the dev vice in working position,

39 Fig. 4 is a plan view showing the device in rest position, and,

Figs. 5 to 8 are corresponding views of an; other embodiment of the invention.

Referring to Figs. 1 to 4, 1 is a supporting frame for the spool magazine 2, which can swing thereon, frame 1 being supported on breast beam 6. 3 is the lathe and leg thereof. On the rear side of lathe 3 is pivotally supported hammer or spool pusher 4 to which one end of arm 5 is pivotally attached. Arm 5 is operable to cause the spool changing action of the pusher, when the opposite end of the arm is struck by other mechanism hereinafter described; 7 is a support or bracket attached to the breast beam and carrying block 8, with safety arm 9 pivotally attached thereto.

is the feeler or weft fork indicating the exhaustion of the weft yarn on the spool in the shuttle or the breakage of the weft yarn nnvrcn non rowan LOOMS No. 168,387, and in Italy March; s, 1926.

unwinding from such spool. Parts 25, through the cross spindle 24 and lever 26, actuate cross bar 27, which carries the safety arm 9 and the members 10 and 13. 10 is a lever having an arcuate slot therein, which serves to guide a pin slidably mounted in swinging arm l1, fulcrumed at one end on breast beam 6. Hence when lever 10 is'swung, arm ll is caused to swing into position to strike pusher actuating arm 5. 15 is a lever pivotally attached to a fork 12. Fork 12 is 7 is pos tioned directly above the shuttle when thelathe has reached the end of its forward movement. Ooncurrentlythe safety arm 9, which is caused by cross bar 27 to swing abo'utits pivot on block 8, closely approaches ,theend of theshuttle and passes by it,if

the shuttle is in proper position, but if the shuttle is not in the proper spool changing position, the end of arm 9 strikes the projecting end of the shuttle and rebounds in such manner as to neutralize, the movement of the slotted lever 10 and arm 11, WhlCh through arm 5 would ordinarily actuate pusher 4:. 1f the shuttle is in the correct position for spool changing, lever 11, havlng been moved to a substantially horizontal position by slotted lever 10, strikes the end of arm 5 when the lathe reaches .the end of its forward movement. The hammer or spool pusher 4 is thereby caused to. movedownwardly in such manner thatit forces a fresh spool into the shuttle, at the same time ejecting the. exhausted spool. I

The spool change having been effected, the lathe moves backward, thereb arms 5 and 11, whereupon a'l parts automatically assume their rest positions.

Referring to Figs. 5 to 8, the device is very similar to the one-above described andindisengaging cludes breast beam 32, lathe 33 and leg thereof and hammer or spool pusher 3a. A distinguishing feature, however, resides in the fact that spool magazine 3]. is stationarily mounted on breast beam 32. The spool magazine is fitted with an endless spool carrying device moving on gears 36, a5 and the magazine also has an extensible slide 47 fitted in its bottom portion to carry a fresh spool from the endless spool carrying device to spool changing position. As in Figs. 1 to 4 this slide is operated by fork l2 and is carried into spool changing position by the same mechanical movements, hammer or spool pusher 34: being actuated when arm is struck by arm ell. 58 in Figs. 5 to 8 corresponds to cross bar 27 of Figs. 1 to l, as to lever 13. and 39 corresponds to safety arm 9, respectively.

The spool change gears shown may be used in connection with any chain drive system and may also be used in connection with other known continuous systems for supporting reserve spools in such manner as to regulate their descent and hold the free ends of the weft yarn in order to facilitate the threading of the yarn in the shuttle.

it is to be understood that numerous details of construction and arrangement may be varied without departing from the scope of the invention as defined in appended claims.

What is claimed is:

1. An automatic spool change device for power looms, comprising the combination with a loom including a lathe, a breast beam,

a shuttle, and a Weft detecting mechanism, of spool changing means mounted on said lathe, a spool magazine mounted on said breast beam, and mechanism carried by said breast beam and controlled by said weft detecting mechanism, operable to position said spool magazine over said shuttle and to actuate said spool changing means.

2. An automatic spool change device for power looms comprising the combination with a loom including a lathe, a breast beam, a shuttle, and a weft fork, of spool push ing means mounted on the rear of said lathe, a spool magazine mounted on said breast beam, mechanism carried by said breast beam and controlled by said weft fork, operable to position said spool magazine over said shuttle and to actuate said spool pushing means, and a safety device adapted to render the spool changing mechanism inoperative when said shuttle is not in proper position to receive a fresh spool.

3. An automatic spool change device for power looms comprising the combination with a loom including a lathe, a breast beam, a shuttle and a Weft fork. of a spool pusher mounted on said lathe, a spool magazine pivotally mounted on said breast beam, and means associated therewith, operated by said weft fork to swing said spool magazine over said shuttle at predetermined times.

a. An automatic spool change device for power looms comprising the combination with a loom including a lathe, a breast beam,

a shuttle and a weft fork, of a spool pusher mounted on the rear of said lathe, an arm pivotally mounted on said spool pusher, a spool magazine mounted on said breast beam, mechanism carried by said breast beam and actuated by said weft fork, operable to actuate said spool pusher, such mechanism including a slotted lever, an arm associated therewith, movable to engage said arm pivotally mounted on said spool pusher, a lever associated with said spool magazine and operable to position the lower portion thereof over said shuttle, and a safety device adapted and arranged to render the spool changing mechanism inoperative when said shuttle is not in proper position to receive a fresh spool.

GUID O BERT ULETTI. 

